diff --git a/appendices/dependencies.xml b/appendices/dependencies.xml
index 71ceac7e2..697d0d1d7 100644
--- a/appendices/dependencies.xml
+++ b/appendices/dependencies.xml
@@ -1632,6 +1632,7 @@
         <segtitle>&external;</segtitle>
         <seglistitem>
           <seg>
+            <ulink url="&blfs-book;general/pcre2.html">PCRE2</ulink> or
             <ulink url="&blfs-book;general/pcre.html">PCRE</ulink>
           </seg>
         </seglistitem>